RN1305,LXHF

Overview

The RN1305,LXHF is a single NPN pre-biased digital transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN bipolar junction transistor with internal biasing resistors, specifically R1 at 10 kOhms and R2 at 10 kOhms, housed in a USM-3 (SOT-323) surface-mount package. The device supports a maximum collector-emitter voltage of 50 V and a continuous collector current of 100 mA. It features a minimum DC current gain of 50 and operates up to a maximum frequency of 250 MHz. Power dissipation is rated at 100 mW, with an operating temperature range extending to +150°C. The component holds AEC-Q101 qualification for automotive applications.

Feature Summary

• Integrated dual-resistor network simplifies circuit design by eliminating external bias components.
• Automotive-grade reliability ensured through AEC-Q101 certification.
• High-speed switching capability suitable for frequencies up to 250 MHz.
• Compact SMD packaging facilitates high-density board layouts.

Applications

• Automotive logic level shifting and signal switching circuits.
• General-purpose digital switching in consumer electronics.
• Interface driver stages for microcontroller I/O expansion.

Procurement Notes

Verify the specific suffix LXHF against the manufacturer's latest datasheet to confirm lead times and availability status. Ensure the ordering quantity aligns with standard reel sizes if bulk procurement is required. Cross-reference the AEC-Q101 qualification requirements with the target application's environmental specifications before finalizing the purchase order.

Selection Notes

Select this component when a single NPN switch with integrated base and emitter resistors is required. The 10k/10k resistor ratio provides balanced drive characteristics. Consider the 50V breakdown voltage and 100mA current limit to ensure adequate headroom for the load. The USM-3 package is appropriate for space-constrained designs requiring thermal performance within the 100mW dissipation rating.

Part Context

This part belongs to Toshiba's RN series of pre-biased transistors, which combine BJT functionality with built-in resistors to reduce component count. The LXHF suffix typically denotes specific packaging or compliance variations within the product line. It serves as a direct functional replacement for other single NPN digital transistors with similar 10k/10k resistor configurations and voltage ratings.

Replacement Considerations

Direct substitutes include other single NPN pre-biased transistors with 10k/10k resistors, such as the RN1305,LF or equivalent parts from other manufacturers offering SOT-323 packages with identical electrical parameters. Verify pinout compatibility and thermal resistance values when cross-referencing.

FAQ

What are the internal resistor values for the RN1305,LXHF?

The device includes two internal resistors: R1 (base resistor) is 10 kOhms and R2 (emitter resistor) is 10 kOhms.

Is the RN1305,LXHF qualified for automotive use?

Yes, the component is AEC-Q101 qualified, making it suitable for automotive electronic applications.

What is the maximum operating frequency of this transistor?

The transition frequency is specified at 250 MHz, allowing for high-speed switching applications.